Coding Technologies AB
39Patents
24Active
39Granted
49Portfolio score
Filing activity: Jan 26, 2000 → Sep 15, 2010 · 24 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US7003451B2 | Apparatus and method applying adaptive spectral whitening in a high-frequency reconstruction coding system | Physics | 141 | Expired |
| US6978236B1 | Efficient spectral envelope coding using variable time/frequency resolution and time/frequency switching | Physics | 121 | Expired |
| US7050972B2 | Enhancing the performance of coding systems that use high frequency reconstruction methods | Physics | 111 | Expired |
| US7283955B2 | Source coding enhancement using spectral-band replication | Electricity | 97 | Expired |
| US7382886B2 | Efficient and scalable parametric stereo coding for low bitrate audio coding applications | Physics | 93 | Expired |
| US7242710B2 | Aliasing reduction using complex-exponential modulated filterbanks | Electricity | 75 | Expired |
| US7469206B2 | Methods for improving high frequency reconstruction | Physics | 73 | Expired |
| US7328162B2 | Source coding enhancement using spectral-band replication | Electricity | 69 | Expired |
| US7487097B2 | Advanced processing based on a complex-exponential-modulated filterbank and adaptive time signalling methods | Electricity | 51 | Expired |
| US7668722B2 | Multi parametrisation based multi-channel reconstruction | Electricity | 49 | Expired |
| US7916873B2 | Stereo compatible multi-channel audio coding | Physics | 48 | Active |
| US8112284B2 | Methods and apparatus for improving high frequency reconstruction of audio and speech signals | Physics | 42 | Active |
| US7974847B2 | Advanced methods for interpolation and parameter signalling | Physics | 41 | Active |
| US7983424B2 | Envelope shaping of decorrelated signals | Electricity | 40 | Active |
| US7433817B2 | Apparatus and method applying adaptive spectral whitening in a high-frequency reconstruction coding system | Physics | 37 | Expired |
| US6925116B2 | Source coding enhancement using spectral-band replication | Electricity | 36 | Expired |
| US8019350B2 | Audio coding using de-correlated signals | Physics | 34 | Active |
| US7260520B2 | Enhancing source coding systems by adaptive transposition | Physics | 33 | Expired |
| US7181389B2 | Efficient spectral envelope coding using variable time/frequency resolution and time/frequency switching | Physics | 32 | Expired |
| US7275031B2 | Apparatus and method for encoding an audio signal and apparatus and method for decoding an encoded audio signal | Physics | 22 | Expired |
| US7936785B2 | Apparatus for generating and interpreting a data stream modified in accordance with the importance of the data | Electricity | 21 | Active |
| US7986789B2 | Method for representing multi-channel audio signals | Electricity | 21 | Active |
| US7720677B2 | Time warped modified transform coding of audio signals | Physics | 20 | Active |
| US8150042B2 | Method, device, encoder apparatus, decoder apparatus and audio system | Electricity | 17 | Active |
| US8014534B2 | Efficient and scalable parametric stereo coding for low bitrate audio coding applications | Physics | 14 | Active |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.